A preson that eats rudely, such as big quantities at once, fast, not clean, with loud voices etc., also does not separate the how from the what. They act immedtiately upon a need in a unified harmonious way. To most of us looking, this would not be a harmonious site.
A psychopath also displays unity between "how and what" as they hear "voices" and fully act upon them. and one can think of many examples of "unity" and "harmony" to one that are disastrous to one's well being or to others.
So, while it is true that one should strive to think and act in full unity, there are many levels, and many steps in the ladder.
In order to climb the ladder of wisdom, one needs to actually separate the "how and what" (divorce them) and learn/introspect on each to later unify a better version of awarness. It seems that this point needs further emphasis in the above.